Mathematics Number Representation & Place Value Meta 6–7 yrs

Place value understanding and number facts

数位理解与数的基本运算

Description

Use place value understanding and number facts to solve problems

Mastery Evidence
  • ✓ Use knowledge that 34 = 30 + 4 to help add 34 + 20 = 54
  • ✓ Solve 'I think of a number, add 10, and get 45. What was my number?'
  • ✓ Apply partitioning to solve a problem in an unfamiliar context
Assessment Prompt

If your child is asked 'which number is closest to 50 — 47 or 54?', can they use their number knowledge to answer quickly and explain why?

Prerequisites 2
Number bonds
数学 · 5–6y
利用数字事实解决问题，得益于已掌握的加减法事实
The two digits of a two-digit number
数学 · 6–7y
用位值解决问题，需要理解十位和个位的概念
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